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Beitrag zur elektrolytischen Desoxydation der Metallschmelzen, besonders des Stahles und des Kupfers vorläufige mitteilung

✍ Scribed by B. Marincek


Publisher
John Wiley and Sons
Year
1967
Tongue
German
Weight
171 KB
Volume
50
Category
Article
ISSN
0018-019X

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✦ Synopsis


A sterically controlled transformation of 3-oxo-17,!?-acetoxy-d1-5a-androstene (2) into 1~,4~-oxido-3-aza-l7~-hydroxy-A-homo-5cr-androstane (16) is described. With the exception of two conversions [14 -+ 15 (60%); 15 -+ 16 (50%)], the yields of the remaining seven steps are higher than 75% each. The reaction sequence will serve as a model for an analogous partial syrithesis of samandarine (1).


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